Homework SourseA student tests four solids for their ability to complete an
A student tests four solids for their ability to complete an electrical circuit when dissolved in water by observing their ability to close a circuit containing a light bulb and obtains the following results:
Which of the solids is a weak electrolyte when dissolved in water?
Check all that apply.
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Check all that apply.
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Part C
Look again at the table in Part B, repeated below.
The student is told that one of the four solids tested is actually calcium bromide ,CaBr2. Which of the solids could be CaBr2?
Check all that apply.
View Available Hint(s)
Check all that apply.
| Solid | Concentration (M) | Strength of light emitted |
| A | 0.20 | Bright |
| B | 0.20 | Dim |
| C | 0.20 | None |
| D | 0.20 | Bright |
Solution
A weak electrolyte will dissociate only to a small extent and thus would give dim light
among the given four choices, weak electrolyte is,
B.
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Part C) CaBr 2 is a strong electrolyte so the one which is CaBr2,
A and D
Both give bright light
